Tanaka Yukio, better known by his nickname Koyuki is a 14 year old who feels disconnected from life in general. Through the act of saving a mismatched dog, he meets guitarist Minami Ryuusuke, and becomes involved in Ryuusuke's new band BECK. Koyuki's life starts to change as the band struggles towards fame.

Tanaka Yukio, better known by his nickname Koyuki is a 14 year old who feels disconnected from life in general. Through the act of saving a mismatched dog, he meets guitarist Minami Ryuusuke, and becomes involved in Ryuusuke's new band BECK. Koyuki's life starts to change as the band struggles towards fame.